Friction-clutch.



G. W. BURG.

PRICTION CLUTCH.

APPLICATION FILED 111111.24, 191s.

41,131,769. Patented Mar.16,1915.

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50 [Zhao-5e G. VV,'BORG. PRIGTIQNCLUTGH. V APPLICATION FAILED 1111111.24. 1913.

1,1 3 1,769. Patented Mar. 16, 1915.

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GEORGE w. -nono, or noon ISLAND, ILLINOIS, AssIGNOn ro THE BORG 'a :BECK

- COMPANY, OFMOLINE, ILLINOIS,` A CORPORATION or ILLINOIS.

' ,rIiLIo'rI'oN-CLUTCH.

Iiec'iiication of liet-ters iP'aitel'nt.

Patented naar. is, rais.

applieatit filed March 24, 1913. serialno. 756,496

T'fll'wh'oivt it may concern? Be it known that' 1,: GEORGE WV. BORG, a citizen of the? United States, residing in Rock Island, in the county of Rock Island and State of Illinois?, have invented certain new and useful Improvements in Friction- Clutches,- of which the followingl is a specification.

This inventionreiate's to nicnas Clutches.

and has' for its object broadly to provide an adjustment or take-up ldevi'ce in a friction clutch which will permit the wearing surfaces'of the clutch tobe adjusted relatively to each other desired amountsv without affecting the efficiency of the clutch or the action of its relatively moving parts.

A further object of the invention is to provide an' adjustment or tke-up device in a friction clutch which may readily beV operated' without requiring that anyv of the partsof the clutch be removed.

Additional objectsand advantages of the invention will be apparent as it is better understood from' the:` following description taken in` connection with the accompanying drawings illustrating preferred embodiments thereof. v

On the drawings :i Figure 1 isa longitudinal sectional view ofv a 'clutch embodyingV my invention; Fig. 2 is an end 'elevation of the same with a portion of the rear wall of the casing broken away; Fig.v 3 is an en- "clutch shown in Figs. 1-3.

larged detail sectional View on the line 43--3 'of Fig. 2, and Fig. 4 is a fragmentary sectional view showing a modied'form of the Referring to the drawings, 5 designates the driving shagftv and 6 the driven shaft.

Upon a collar 7 keyed tothe 'driving shaft able groove in the disk.

` wheel` by suitable fastening means 1-5' and.

A clutchl casing 14 1s secured to the flyinclos'es' the diskv 12.y "A; thrust ring 16 is mounted within the casingy 14 to move longltudinally thereof and is held against rotation relatively to the casing and the flywheel .by means of driving pins 17 extend- Ing through the casing and taking into transverse slots 18 in the periphery of the thrust ring: A pai-r of friction rings 19 are provided, one between the adjacent faces of the fly-wheel and the friction disk 12 and the other between thel adjacent faces of the friction disk 12 and the thrust ring 16. The face 21 of the thrust ring distant from the fly- .wheel is beveled or inclined from the inner edge of the rin-g toward the casing to form an lnclined thrust seat to receive the thrust from a plurality of bell cranks 22 which are providedl to move the thrust ring toward the fly-wheel to throw in the'clutch.

The bell cranks 22y are pivotally mount ed in lugs `23 carried by the ring' 24 positioned against the rear wall 25V of the casing. The ends of thel arms of each of these bell cranksl are preferably but not necessarily provided with rollers26 and 27, the roller 26 of the short arm being adapted to engage and travel over thebeveled face or seat 21 of the thrust ring 16. The roller 27 is positioned in asuitable groove 28 of, a collar 29 which is pressed toward the left, viewing Fig. 1, away from the rear,wall 25 of the'casi'ng by` aspiral springA 31. ,The collar 29 Ais mounted upon a vclutch vthrow-out sleeve 32 at the end of which within the casing is V4provided an outwardly extending flange 33 which is adapted to engage the collar 29 when the sleeve is .movedI against the force `of the spring 31 toward the right, viewing Fig. 1by -any suitable mechanism to throw out the clutch. This sleeve is caused to rotatewith. the oasingand with the driving element by a` spline34 slidably connecting it to the rearl wall ofthe casing. A plurality of springs 3,511eachl fastened at one end to a lug 36V provided upon the thrust ring and at thevother end to a lug 37 pro- ,.vided upon the rear wall of the` casing, pull the thrust ring. toward Ithe saidear wall and cause it to follow the rollers 26 when the bell cranks are moved to throw-out the clutch and break immediately `the frictional engagement between the thrust ring and the friction disk. A ring 24 upon which the bell cranks are pivoted is connected to the rear I wallfofthe casi-ng and is adaptedto be shoulders ,or bearing studs 39,-having their outer faces-correspondingly inclined to permit them .to Vengage and slide over the inclined bases .ot the recesses 38, as. seen in Il`ig. B. vTheinclined facesot the shoulders and the bases offthe recesses .are heldin fixed contact by a plurality .of bolts 41 fastened at their inner ends in thering and extending through arcuate slots 40 in the rearwall of'the casing and preferably behind the recesses 38. Nuts-42 are provided. upon the ends of the bolts and are adapted to `bescrewed down against the outer face of the rear wall of the casing to. hold the y lring in adjusted relation relatively to said rear wall.

.NVhen the friction rings 19 are new, the studs orshoulders 39 are disposed at the deeper ends of the recesses. 38. yAs'the friction rings 19 wear awaysso that'the action oie-the bell cranks upon thethrust ring does not produce asuiciently {ir-in frictional engagement between the drivingand `driven elements, the nuts 42 may be loosened and pushed about the central axis of the casing to slide the inclined tace of tlie stud up the inclined base of the recess todecrease the distance between the ring 24 and the flywheel until the bell cranks are again in position to change the travel of the thrust ring longitudinally of the casing'and permit it, when the clutch is thrown in, to hold the -transmission parts in eflicient frictinal en- In Fig. 4 is shown a second embodiment of my invention in which the positions of the yoke ring 44 and the thrust ring 45 have been interchangedand the parts of the clutch reconstructed accordingly. The thrust ring is provided with a beveled thrust I seat 46 for the bell cranks 47 upon its face away from the rear wall of the casing, and this seat is inclined from the outer edge of the ring toward the inner edge. In the present instance, the short arms 48 of the bell cesses 38 in contact with their inclined bases,

and slots 52 are provided in the yoke .ring tovigecenive4 the driving pins 17 and cause the yoke ring to rotate with the casing. The operations of the clutch and of the` adjustment .device are'identical with thoseralready described in connection with 1the einbodiF mentv of `the invention Ashown in` Figs.. 1 to 3.

4It will be .apparent that as the bellw cranks thrust directly against the thrust seats and have no fixed connection therewith or with the throw-out sleeve, lthey will act with equal eiiicieney in 'all of the adjusted positions, and that as -the nuts, which are the only parts which 'must be manipulated in' adjusting the clutch, are located without the casing no, parts lof the clutch need be removed to perform this'operation.

It is thought that the invention and many y of its Aattendant advantages will be understood 'from theV foregoing without further description andI it will be obvious that numerous changes may be made in the torni;

construction and arrangement of the parts without departing from the spirit and scope of the invention or sacriiicing any of its advantages, the forms hereinbefore disclosed being merely preferred embodiments thereof.

I claim:-

1. Ina. friction clutch, the combination ot' a driving element, a'driven element, a casing fixed to one element'and embracing the other element, a4 thrust member mounted within and rotatable with said casing, means posi- Vtioned between said thrust member and the rear wall ot the casingfor lmoving said thrust member longitudinally of the casing to establish -frictional engagement between said elements. means slidably engaging the rear wall of the casing to move said moving means longitudinallv of said elements to adi'ust for wear of the parts of the clutch, and means for adjusting said slidably engaging means.

*2. In a fricti fixedjto one element and embracing the other element,'a thrust member mounted within and rotatable with said casing, meansfoi" moving said thrust member longitudinally of the casing to establish frictional engagement between saidelements interposed between said thrust member and the rear wall of the casing, meansinterposed between said' moving means and said rear wall to cause said movingmeansto move longitudinally of said elements upon angular movement of said moving means relatively tosaid casing,

on clutch, the combinati on' ot a driving element, a driven element. a casing and means for `moving said moving means angularly with respect to the casing to ad just for wear of the parts of the clutch.v 'f

lfixed to one element'and embracing the other element, a thrust member mounted within and rotatable with said casing and having its face adjacent the said casing disposed in a' continuous plane, means interposed between said rear wall and the said thrust member for engaging the said face to move the thrust member longitudinally of the casd ing to establish frictional engagement between the elements, and means movable angularly of the casing for shifting said moving means longitudinally of the casing and angularly with respect to the said thrust member to adjust the part-s of the clutch to compensate for wear.

4. In a friction clutch the combination of a driving element, a driven element, a casing fixed to one element and embracing the other element, a thrust ring mounted within and rotatable with said casing, a member mountedwithin said casing adjacent the rear wall thereof, a bell crank carried by the said member and adapted to move the said thrust ring to establish frictional engagement between the elements, the adjacent faces of said member and said rear wall being correspondingly inclined to move the said ring and bell crank longitudinally of the casingupon relative angular movement of said member and casing toadjust the parts of the clutch to compensate 4for wear, and means for moving said member angularlyrela-A tively to the said casing. v 5. AIn a friction clutch, the combination of a driving element, a drivenelement, a casing fixed to one element and embracing the other element and having a recess i'n its rear wall provided with an inclined base, a thrust ring mounted within said casing, a member provided with ajstud adapted to 'seat in and engage the inclined base of said recess, a bell' crank carried by the said member adapted to move the said thrust ring longitudinally of the casing to establish frictional engagement between the elements, and means for moving said member angularly of the casing to slide the said stud over the inclined base of the recess to move the bell crank longitudinally of the casing to adjust the parts vof the clutch to compensate for wear.

6. In a friction clutch, the combination of a driving element, a, driven element, a casing fixed to one element and embracing the other element and having a recess provided with an inclined base in the inner face of its rear wall and having an arcuate slot disposed through said rear wall, a thrust ring mounted within and rotatable with said casing, a member having a shoulder adapted to seat in said recess, a bell crank carried by the said member and adapted to move the thrust ring to establish frictional engagement between the elements, and a bolt fastened to the said member and protruding through the said slot'and adapted to move lengthwise of the slot to move the said member longitudinally of the easing to adjust the parts of the clutch 

